Black Spear Ballista

When Black Spear Ballista enters the battlefield,
flip five coins. For each time you win the flip,
Black Spear Ballista deals 1 damage to all
creatures an opponent controls.
At the beginnig of your combat phase flip five
coins. For each time you win the flip, tap target creature an opponent controls.
At the end of your turn, pay {4}. If you can`t, sacrifice Black Spear Ballista.